Coating machine



Feb. 12 1924 R. D. SCZHOENWETTER COATING MACHINE 5 Sheets-Shee t 1 Filed Jan.

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Feb. 12-, 1924. 1,483,120

R. D. SCHOENWETTER COATING MACHINE Feb. 12 1924..

R. D. SCHOENWETTER comma MACHINE Filed Jan. 8. 1920 5 Sheets-Sheet 4 lnuewtoz rams Feb. 12, 1924.

- UNITED STATES "minimum: nlscno' PATENT OFFICE.

. F BALTIMORE, mum, ASSIGNOB, BY KESHE ASSIGIHIENTS, TO NATIONAL WUFAOTUBING COMPANY, OF BALTIMORE, I MARYLAND, A. CORPORATION 0]? mm.

v To all'wlwm it may concem:

Be it known that I, Rnmnonn D. ScnonN- wn'rrnn, a citizen of the United States, residing at Baltimore, in the State of Maryland,

have invented certain new and useful Improvements in Coating Machines; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable 0t ers skilled in the art to which it appertains to make and use the same. I

My invention relates to coatingmachines.

Among the objects of my invention are 2- Toprovide means for applying a coating of water to a lgummed band such as is usu- T ally; applied to cigars.

provide means for removing a hand from a stack of bands and bringing same into operative relation with the coating mechanism. v

To provide means for deivering the band to means for applying the band to the cigar after said band hasbeen coated with water. i To provide means for adjustably varying the time interval between the application of the coat of water to the band and the appli-.

cation of the hand to the cigar. To provide means for opera-ting the. va

rious elements ofmy improved coating machine at the proper-times-..

removing the band from each element and delivering it to the next element during the operation of coating the band.

To provide a wetting mecha-nism capable of operating'upon bands that vary greatly in size and shape.

To provide a machine capable of performing the ascribed functions and having a minimum of parts and requiring a minimum of adjustment and care.

My improved cigar banding machine con sists of a magazine in which the bands are stacked and from which they are removed by an appropriate sheet feeding machine and delivered to a conveyor by which they are brought into operative relation to a coating mechanism which applies moisture or a.- gum preparation to said hands, after which a depositor removes thebands from the con.- veyor and delivers said bands to the hand appl ing mechanism, which applies the ban s to the cigars. The cigars are held To provide-simple and efiective means for con'rmo Application as January 8, 1920. Serial are. 350,186.

and controlled by appropriate mechanism forming (part of the band applying mechanism an said cigars are also shifted by suitable mechanisnr from the position in which the band is applied after the operation is completed.

This application is intended to cover the novel features involved in the mechanism which performs the various operations by which the hand transported from the band holding mechanism. to the band applying "mechanism and coated with water or other material during said transportation.

One combination ofelements for carrying out my invention is iiustrated in the accompanying drawings, in which Fig. 1 is a, plan view of my improved coating machine, the bracket 58 being shown as in section along the line 1-1 in Fig. 6, and the nostril 210 being shown in section along the line 1 in Fig. 6.

Qis a section of the parts shown in Fig. 1 taken along the line 2-2 in Fig 1, certain of the parts being shown in elevation and -not in section, looking in the direction of the arrows.

Fig. 3 is an elevation ofjhe conveyer, one clamp and the depositor, these parts being shown as viewed in the direction of the an row 3 in 1.

showing one clamp thereon and one suction head, the parts being viewed in the direction of the arrow 3 in Fig. 1. This view also shows the suction pump which is not shown in Fig. 1. I

Fig. 5 is an elevation of the wetter and operating means therefor, as shown in' Fig. 1 when viewed in the direction of the arrow 4 in said figure. In Fig. 5 the reservoir'for containing the water is shown but said reservoir is not illustrated in Fig. 1.

Fig. 6 is an elevation o certain of the parts as shown in Fig. 1 when viewed in the d rection of the arrow 3 in said figure. view also shows the upper end of" the bracket 58 and the suction head which shifts the- Fig. 4 an elevation of the conveyor,

This

bands from the depositor and delivers them for supporting the various mechanisms forming parts of my improved cigar band ing machine.

21 is the main shaft of my improved cigar banding machine which is revolubly mount 'ed in suitable bearings, one of which is shown as at 22 and said shaft is revolved in any suitable manner by any suitable source of power.

A cam disk 23 is rigidly mounted upon the shaft 21 and a groove'24 is provided in one face of said disk.

A rol'er 25 revolublyniounted upon one end of the bell crank lever. 26 is mounted in said groove. The lever 26 is secured u on the shaft 27 and the latter is revolu bly mounted in suitable bearings, one of which is shown as at 28.

The left hand end of the bell crank lever 26, (see Fig. 4), is connected by the link 29 with the cross head 30 which is rigidly secured upon the ends of the rods 3131, the

latter being slidably mounted in the bearing 32. The rods 3131 are joined together at the top by the cross head 33, the latter being provided with a clamp 34 in which the suction head 35 is secured. The clamp 34 i's"'so'arranged that the suction head may be adjusted vertically as desired. The suction head 35 is formed on a short length of tube to the lower end of which one end of the hose connection 36 is .secured. The other end of the hose connection 36 is secured upon a nipple formed upon the pump cylinder 37. The pump cylinder 37 is secured upon the frame 20 by suitable bolts such as 38. A second pump cylinder 39 is also secured 1113216 the frame 20 by suitable bolts such as Y Y Pistons 41 and 42 formed integrally with the connecting rod 43 are slidably mounted within the cylinders 37 and 39. The pistons 41 and 42 may be provided with any suitable packing or rings.

A yoke 44 is pivotally connected by the bolt 45 to the connecting rod 43 and the other end of said yoke is provided with a slot 46 through which the main shaft 21 extends. Cam. rollers 47'47 are mounted upon the yoke 44 and said rollers contact with the face of the cams 4848, the latter belng rigidly secured upon the shaft 21.

The clgar bands are supported in a suitable magazine, not shown, and the lowermost band 49 is bowed into the position shown in Fig. 4 preparatory to its removal I from the band magazlne.

is f

The operation. of the parts hereinbefore described is' as'follows:

The sha ft 21 being revolved, the roller 25 is moved by the-wall of the groove 24 and brings thesuction head 35 upwardly until it contacts with the band 49. One of the cams 48 then moves a cam roller 47 in such a direction as to bring'the piston 41 from its extreme right hand position, as indicated by the dotted line 50 in Fig. 4, to the position shown in Fig. 4, thus creating a partial vacuum within the cylinder 37. When this occurs the pressure of the atmosphere holds the band 49 against the top of the suction head 35, the side of the groove 24 then acts upon the roller 25 to move the suction head 35 downwardly to the position shown by full lines in Fig. 4 in which position the suction head normally rests in order to permit the band at 49 to be delivered to the conveyor 51. The conveyor 51 comprises a disk 52 provided with a groove bearing 53 which is revolubly mounted upon a pluralcured by the bolts 57 to the bracket 58. The

bracket 58 is secured upon the frame 20 by bolts such as 59. The bolt 60 is secured in the index plate 56 and a disk 61 secured upon the top of said bolt and bearing against the top of the disk 52 serves to prevent displacement of the disk 52 from the steel balls 54. A ring 62, preferably formed of aluminum, and having a chamfered edge as at 63 is secured in any approved manner upon the disk 52.

I preferably employ aluminum for forming the ring 62 because of its freedom from corrosion since this ring becomes moistened by the wetting mechanism during the ordinary operation of the machine.

A plurality of brackets each comprising a base 64 and a pair of cars such as 6565 is secured upon the disk 52. A bearing pin 66 is revolubly mounted in each pair of ears 6565 and the ends of said pin are rigidly narily employed in the ordinary Geneva wind. The pinion 73 having a single tooth 74 is mounted upon the shaft 75 and the latter is revolubly mounted in a suitable bearmg formed within the bracket 58. A bevel gear 77 1s mounted upon the lower end of the shaft 75 and a bevel gear 78 meshes there'- wlth. The bevel gear 78 is mounted upon the shaft 79 and the latter is revolubl mounted in suitable bearings one of whic is shown upon the bracket 58. The bevel gear is mounted upon the shaft 79 and ed in suitable bearings (not shown) and the bevel gear 83 is mounted upon the other end thereof. The bevel gear 83 meshes with the bevel gear 84 and the latter is mounted 'upon the main shaft- 21. i

The means for operating the clamps 68 to receive a band will now be described 'The roller 85 is revolubly mounted. in the fork 86 and the latter is vertically slidable within the bracket 87, an adjusting nut 88 being mounted upon the fork 86 in order p to limit the vertical movement thereof;

The clamp openlng lever 89 is pivotally mounted upon the pin 90 and the latter is secured'in the bracket 87. The bracket '87 is secured upon the frame 20 by bolts. The lever 89 is provided with a groove in which is slidably mounted the wood block 92and the metallic pin 93 is fixed in said block. The pin 93 extends through the slot 94 formed in they bracket 87 into a suitable hole provided in the fork 86-. A sprin 95 is secured at one end to the lever 893nd at the other end 'to the bracket 87 an serves to move the lever from the position shown by full lines inFig. 4 to the position shown by dotted lines in said figure whenever the nose 71 is to be lifted from the aluminum ring 62. The lever 89 is provided with a bearing 96 on its left hand end (see Fig. 4) and the sleeve 97 is provided with a cylindrical portion which isrevolubly mounted in said hearing. "A rod 98 slides freely through the sleeve 97 and the lower end ofsaid rod is provided with a bearing 99 which is revolubly mounted upon the pin 100'secured in the cross head 33. Adjusting nuts such; as 101 serve to adjust the operation of the lever 89. I

The means for moistening the bands with water or coating them with a gum preparation will now be described The cam disk 102 is' mounted upon the shaft 21 and bolted to the.cam disk 23. A cam groove 103 is provideddn the disk 102 and theroller 104 is revolubly mounted on the upper endof the lever 105 and the latter is pivotally mounted on the pin 106 secured in the bracket 107 which is secured toi the frame 20 by bolts such as 108. The'lower" end of the lever 105 is pivotally connected to one end of the link 109, the other end of which is pivotally connected to the lower end of the lever 110. The link 109 is provided with a clevis on each end by means of which its length may be adjusted. The lever 110 is rigidly secured to the shaft 111 and the latter is revolubly mounted in suitable bearing brackets one of which is shown at 112' in Fig. 5 and is secured to the frame means of bolts such as 113. The lever 114 is also secured to the shaft 111 and the sleeve 115 is secured to the end of said sleeve. The lower member of the universal joint 116 is revolubly mounted in the sleeve 115 and the upper member of said joint is connected to the link 117 which extends through the hole 118 provided in the frame 20 and said link is pivotally connected at its upper end to one end of the bell crank lever 119, the latter being pivotally mounted on the bracket 120. The bracket is revolubly mounted upon the lower end of the bolt. 60.

It is to be noted that the upper end of the link 117 is in substantial alignment with the axis of the bolt 60; consequently, as' the bracket 120 is revolved, as hereinafter explained, no motion of the lever 119 is effected. It isalso evident that by reason of the fact that the lower end of the universal joint 116 is revolubly mounted in the sleeve 115, the bracket 120 may be freely turned about the bolt 60.

The upper end of the bell crank lever 119 is pivotally connected to one end of the arm 121 which is formed integrally with the sponge holder 122. A pin 123 is mounted in the arm 121 and the roller 124 is revolubly mounted upon the end of said pin. The roller 124 extends into the recess 126 provided in the arm 127, theswitch 128 is secured upon the inner end of the shaft 129,-

the latter being revolubly mounted in a suitable bearing provided inthe arm 127 and an arm' 130 is secured upon the outer end of said shaft. A spring 131 secured at one end of said arm and at the other end to the arm 127 serves to normally keep the switch 128 in the position shown in Fig. 2. In Figs. 1 and 2, the middle portion of the spring is omitted for the sake of clearness. The switch 128 is shaped so that when the roller 124 moves in a counter clockwise direction around said switch, (see Fig. 2),

as hereinafter explained, it. will be guided by the wall of said recess and the face of said switch from the position marked 132 in said-figure to the position marked 133 in said figure, without producing any movement of said switch. As said roller moves from the position marked 133 to the position marked 134, the switch 128 will be lifted and the spring will bring said switch to the position shown by full lines in Fig. 2, when the roller has reached the position shown dotted at 134.

During this; last-described movement of the roller 124, it will be guided by the wall of the recess 126 and the lower face of the switch 128. During the movement of the roller 124 from the position shown at 134 to the position shown at 135, the roller will be guided by the wall of the recess 126 and by the edge 136 of the plate 137, said edge bearing upon the pin 123. When the roller moves from the position shown at 135 to the position shown at 132, it Wlll be guided &

by the face of the switch 128 and by the edges 136 and 138 of the plate 137, said edges bearing against the pin 123.

From the position shown at 132, in a counter clockwise direction, to the position shown at 135,'the plate 137 is provided with an edge 139 which follows the contour of the wall of the recess 126 and projects sufliciently inside of said wall to just clear the pin 123 when the roller 124 is moving around said wall. The projecting edge 139 is provided on this portion of the plate in order to extend over the face of the roller 124 adjacent to the arm 121 and the edges 136 and 138 have a. like relation to said face, this arrangement of the plate with reference to said roller insuring that the arms 121 and 126 shall move together when the arm 127 is revolved around the bolt 60, as hereinafter explained. The arm 127 is revolubly mounted upon the bolt between the bracket 120 and the index plate 56. The arm 127 is provided with a boss 140 in which is slidably mounted in the index pin 141 normally kept in the position shown in Fig. 2 by the spring 142 and capable of movement downwardly from said position by the head 143 securedto the lower end of said pin. The upper end of the pin 141 may be introduced within any one of the index holes 144 by moving the head 143 downwardly and shifting the arm 127 until the upper end of said pin is in alignment with said hole, thus locking the arm 127 in any desired position, for a purpose hereinafter explained.

a The reservoir 145 'is secured at the upper end of the pipe 146 and the lower endof said pipe is secured in the frame 20 and extends through said frame, a hose connection I 147 being secured at one end of said extension and the other end ofbaid hose beingsecured to one end of the pipe 148 mounted upon the link 117. The hose 149 is secured to the lower endof the pipe 148 and the upper end of said hose *is secured to the sponge holder'122. I

The depositor which removes the bands from the conveyor after the same havebeen wetted and delivers them to the suction head that transfers them to the band applying mechanism will now .be described A cam disk 150 is secured upon the shaft 21 and said .cam disk is provided with a groove 151 in which is mounted the cam roller 152, the latter being revolubly mounted upon the pm 153, the pin 153 being secured in the lever154 which is mounted at its lower end upon the pin 155 secured in the bracket 156, and the latter is secured upon the frame 20 by cap screws 157.

A link 158 is pivotally connected at one end to the upper end of the lever 154 and the other end of said link is pivotally connected to one arm of the bell crank lever 159.

The link 158 is provided with a clevis at its right hand end (see Fig. 1) by means of which the length of said link may be adjusted. At its left end the link 158 comprises the spring case 160 in which is mounted the spring 161 against which bears the left face of the enlarged end 162 formed on the rod forming the body of said link. A spring 163 bears against the right face of said enlarged end and a thimble 164 threaded within the case 160 serves to produce any desired pressure of the springs 161 and 163 upon the enlarged end 162.

The lever '159 is formed integrally with the boss 165 andmthe latter is revolubly mounted upon the sleeve 166, the lower end of which is secured in the frame 20. The nuts 167 atthe upper end of said sleeve prevent displacement of the boss 165-thereon,

and nuts 168 at the lower end of said sleeve secure the, latter in the frame 20. The fixed member 169 of the depositor clamp is secured at the end of the lever 159, as shown in Figs. 1 and 3.

The member 169-may be of any suitable shape such as is shown in Figs. 1 and 3, that will adapt it to form on member of the clamp for taking the bands from the conveyor and delivering them to the suction head, and cooperating with said member there is a-movable member 170 of said clamp which is shaped to cooper ate with the fixed member in moving the bands as just explained. Said movable member is pivoted as at 171 upon a riser 172 provided upon the end of the lever 159. A groove 173 is formed in the depending portion 174 of the member 170 and the roller 175 is mounted in said groove. The roller 175 is mounted upon a pin secured in the upper end of the arm 176 and the latter is secured upon one end of the shaft 177 which is revolubly mounted in the riser 17 2 and ear 178 formed upon the lever 159 and the lever 179 is secured upon the other end of said shaft. The free end of the lever 179 .rests over the push rod 180 which is slidably mounted coaxially with the sleeve 166, the lower end of the rod 180. rests upon the end of the lever 181 which is secured upon the shaft-182 and the latter is revolubly mounted in the bearing bracket 183 secured to the frame 20 by bolts such as 184. The lever 185 is also secured upon the shaft 182 and extends upwardly through a suitable hole provided in the frame 20, and

. the upper end of said lever is pivotally connected to one end of the link 186, the other end of which is pivotally mounted upon the pin 187 secured in the lever 188, the latter beingpivotally mounted upon the pin 155.

A roller 189 revolubly mounted upon a pin at the upper end of the lever 188 extends into the cam groove 190 formed in the cam disk 191 and the latter is rigidly'secured uponthe shaft 21.

The means for operating the suction head which removes the bands from the depositor and delivers them to the band applying mechanism will now be described The shaft 192 is revolubly mounted in a suitable bearing provided in the upper end of the bracket 58 and a gear wheel 193 is rigidly secured upon said shaft. The tooth periphery of. said gear meshes with a gear belonging to .a part of my improved cigar banding machine not included in the pres ent application. The bevel gear 194 is mounted upon the shaft 192 and meshes with the/bevel gear 195 which is mounted upon the upper end of the shaft 75. On one side of the gear wheel 193 there is provided a cam groove 196 in which is mounted the roller 197 and the latter is revolubly mounted upon a pin in one end of the lever 198. The lever 198 is secured to theshaft 199 and the lever 200 is also secured to said shaft. The clamp 201 is pivoted to the left end of the lever 200, (see Fig. 6), and the clevis 202 is adjustably secured in said clamp. The clevis 202 is connected to the cross head 203 and the latter is secured to' the guide rods 204 and 205, both of which are mounted in suitable bearings at their upper ends, to slide freely vertically in suitable bearings forming part of the'bracket' 58. The rod 204 isslidably mounted in any suitable hearing at its lower end and the rod 205 is secured at its lower end to the yoke 206, the prongs of which are slidably mounted in suitable grooves 206 206 formed within the bracket 207 which is secured to the bracket 58 .in any approved manner. The yoke 206 is provided with a nipple 208 to which one end of the hose 209 is secured, the other end of said hose being attached to a nipple formed upon the pump cylinder 39. The nipple 208 communicates with a hole in .the nostril 210 formed on the lower side of the yoke 206.

In order to provide for non-interference of the 'clampsupon the conveyor when a band is being removed by the depositor from the conveyor, the following instrumentalities are provided Y 'The cam 211 is secured upon the shaft 75 and the roller 212 bears against the face of said cam. The roller 212 is revolubly mounted upon a pin secured in the lever 213, the latter being revolubly mounted upon the pin 214 secured in the bracket 215 which. is secured to the bracket 58 in any approved manner. Upon a suitable pin in the end of the lever 213 there are revolubly mounted three rollers 216, 217and 218 which are so located as to be brought into con-' tact, as hereinafter explained, with three of the tappets 70. In order to restore the lever 213 to the position shown in Fig. 1 after each displacement therefrom by the earn 211, the spring 219 is provided, one

end of which is secured to the bracket 58 and the other end of which is secured to the lever 213.

The operation of my improved coating machine is as follows As before explained, the cigar band 49, (see Fig.- 4), is moved by the suction head 35 in which there is a partial vacuum from the position shown dotted in said figure, in i which position it is the lowermost band in the band magazine, to the position shown at 49 in said figure. During the movement of the band 49, as just described, the cam groove 24 operating through the roller 2. and connected parts will keep the lowermost nut 101 from contact with the sleeve 97 and thus, the spring will force the roller 85 down upon the tappet 70 and lift the nose. 71 against the pressure of the spring 69 so that the band 49 may be brought down against the ring 63. Shortly after this occurs, the lowermost nut 101 strikes the sleeve 97 and moves the clamp opening lever 89 to the position shown by full lines in Fig. 4, thus removing the roller 85 from contact with the tappet 70 and allowing the spring 69 to bring the nose 71 down upon theband at 49*";

t It is to be understood that during the motion of the suction head 35 and clamp opening lever 89, the tooth 7 4 of the pinion 73 will be moving through that part of its arc of motion in which it will be out of contact with a tooth 72 on the conveyor 51' and thus, said conveyor will remain motionless. A

As soon as the band is secured between the clamp 71 and the ring 63, one of the cams 48 moves the right hand. roller 47 toward the right and moves the piston 41 135 in Fig. 2. The wall-of the cam groove' 103acting through the roller 104'and connected parts then moves the roller 124 from the position 135 to the position 132, thus bringing the sponge 220 into contact with the lower side of the band, and during the motion of the roller 124 from the position 132 to. the position 221, the sponge will be moved approximately horizontally in contact with the lower side of the band. The roller 124 will then movedownwardlyand' toward the right to again reach the position 135, and during this latter movement, the

switch 128 will be lifted in order to permit the roller to pass and will then be forced downwardly by the spring 131 to the posi-- tion shown in Fig. 2, thus preventing any return of the roller 124 alongthe lower side of the recess 126 when it is next operated.

It is to be noted that water is kept in the reservoir 145 up to about the level of the line 222 in Fig. 5 and, as the sponge is moved, as just described, the sponge holder 122 will be brought slightly below said level, and consequently, the water passing through the hose 147 and 149 and the tube 148 will wet the lower side of the sponge 220 and keep it moist.

The conveyor 51 is then rotated intermittently, as already described, until the moistened band is brought into position to be grasped by the clamping members of the depositor. When the band reaches this position, the wall of'the cam groove 151 operating upon the roller 152 and connected parts moves the depositor from the position shown in Fig. 1 to the position it will occupy when the clampingend of the fixed member of the clamp 169 is in the position shown by'dotted lines in said figure.

During the motion of the depositor, as just described, the wall of the cam groove 190 acting through the roller 189 and connected parts upon the movable member 170 of the depositor clamp normally eeps the latter raised from the fixed me er 169; consequently, when the conveyor 5 is moved forwardly, the band held in the corresponding clamp on the conveyor is introduced between the fixed and movable members of the depositor clamp and the conveyor then comes to rest. The cam groove 190 acting through the roller 189 and connected parts will move'the. end of the lever 181 downwardly and the spring 223 will move the lever 179 and the push rod 180 downwardly. Thepressure of said spring acting through the roller 175 upon the wall of the groove 173 will bring the movable member 170 down against the band. P I It is to be noted by referenceto Fig. 1 that the band at 49 will extend crosswise of the clamping portions of the fixed and movable members of the depositor clamp and. that said portions will be applied to said band near the centre of the latter thus avoiding contact with the wetted portion thereof 224.

The wall of the cam groove 151 acting through the roller 152 and connected parts i then moves the depositor from the position in which the clamping end of the fixed member 169 is shown dotted in Fig. 1 to the position shown by full lines in said figure in order to bring the band into operative relation with the nostril210.

Previous to the motion of the depositor, as just described, the face of the cam- 211 acting through the roller 212 and connected parts brings the rollers 216, 217 and 218 into contact with three of the tappets 70, thus raising three of the noses 71 in order to release from the conveyor clamp the band that has just been gripped by the depositor clamp, and raising the next two noses in a clockwise direction so as to permit the free reference to the tappet and insures that the three noses 70 will be raised equal distances above the ring 63.

It is desirable to be able to vary the time interval between the instant at which the sponge 220 is applied to the band and the instant at which the band is delivered to the conveyor, and the operation of the parts by which the variation in said time interval is obtained is as follows It is to be noted that the suction head 35 delivers the band to the conveyor clamps in a fixed position and that said bands are carried in a clockwise direction (see Fig. 1) by the conveyor to the position in which the sponge 220 is applied thereto. When the sponge 220 is in the position shown in said figure, the shortest time interval allowed will elapse between the instant at which it is applied to the band and the instant at which said band is delivered to the depositor. It may be desired to vary this interval owing toa variation in the hydroscopic state of the atmosphere, the temperature thereof, the nature and consistency of the gum upon the bands, or other factors which might-produce a variation in the time required to secure a proper softening of the m. This in accomplished by applying the fingers to the head 143, applying the index pin 141 downwardly, and moving the arm 127 in a counter clockwise direction and then allowing the index pin 141 to enter the appropriate hole of the series of index holes 144, thus increasing the time, interval as desired.

It is to be noted that when the arm 127 is moved as just described, the arm 121, which carries the sponge holder, will be moved in unison therewith on account of the relation between the roller 124 and the hereinbefore described. I When the depositor reaches the position shown by full lines in Fig. 1, the wall of the cam groove 196 acting through the roller 197 and connected parts upon the yoke 206 brings the nostril 210 into contact with the upper side of the band at 49". When this occurs, the cam 48 acting upon the right roller 47, moves the piston 42 toward the right and thus creates a partial vacuum plate 131 as p The wall of the cam groove 190 acting through the roller 189 and connected parts end of the fixed member 169 to the position shown dotted in Fig. 1, the cam groove 19() acting. through the roller 189 and connected parts keeping the movable member 170 raised from the fixed member 169. 7

It is to'be noted that during the movements ofthe depositor the springs 161 and 163 act as cushions to absorb the shocks due -to the inertia, of the parts.

While I have shown a, rotatory conveyor provided with clamps thereon for holding thearticle to be wetted, a wetting mechanism and a. depositorfor removing the article 'from theclamps on the conveyor in combilent thereof may be used with many forms of conveyors and many forms of depositors. Furthermore, while I have shown one specific meansfor periodically wetting one side of the sponge forming part of my wetting mechanism, it is to be understood that many forms of mechanisms may be provided for accomplishing this purpose and the variation in the aforesaid time interval without departing from the spirit of my invention.

It is also to be noted that many changes may be made the space relations of the elements of my improved coating machine and in the correiation of the movements 2. In a coating machine, the combination of a clamp for holding an article, means for wetting 1 said article, means for removing ,said article from said clamp, and means for varying the period of time between said wetting and said removal.

In a coating machine, the combination of a clamp means for opening said clamp to receive an article, means for wetting said article, means for removing said article from said clamp and means for varying the timeinterval between said wetting and said removal. y p 4. In acoating machine, the combination with an index plate comprising a plurflli y of holes, of a conveyor for article to be wetted rcvolublymounted on said plate, an

arm mounted to revolve coaxially with said conveyor, a vwettin mechanism supported by said arm, an in ex pin on said arm coacting with said holes to lock said warm in any one of a plurality of positions, and means for moving said wetting mechanism to wet said article. d

5. In a coating machine, the combination with a conveyor for an article to be wetted,

of a cam comprising a slot mounted adjacent to said conveyor, 2, wetting mechanism providcd with a roller mounted in said slot, and means for moving said roller along said slot to bring said wetting mechanism into position to wet said article.

6. In a coating machine, the combination with a conveyor for an article to be wetted, of a cam comprising a slot mounted adjacent to said conveyor, a wetting mechanism provided with a. roller mounted in said slot, means for moving said roller along said slot; to bring said wetting mechanism into position to wet said article, and a switch on said cam to control the movement of said roller,

7. In a coating machine, the combination with an index plate, of a conveyor for an article to be wetted revolubly mounted on said plate,:an arm mounted to revolve coaxially with said conveyor, 2. wetting mechanism supported by said arm, a second arm mounted to revolve coaxially with said conveyor, a bell crank lever mounted on said second arm and connected to said wetting mechanism and an operating rod for said bell crank lever in approximate axial alignment with said conveyor.

8. In a coating machine, a wetting mecha nism' comprising a fixed reservoir and a liquid therein, a movable sponge holder, a

sponge mounted therein, a duct between said reservoir and holder, and means for moving said holder tb bring said sponge into contact with the article to be wetted and to bring a part of said sponge below the levelofsaid liquid.

9. In a, coating machine, a wetting mechanism comprising a fixed reservoir and a liquid therein, a movable sponge holder, a

sponge mounted therein, a duct between said reservoir and holder and means for alternately moving a part of said sponge below and above the level of said liquid.

10." In a coating machine, the combination with a conveyor for an article to be wetted, of a cam comprising a slot mounted adjacentito said conveyor, a wetting mechanism provided with a roller mounted in said slot, means forrotating said conveyorbya plurality of angular movements alternating vwith dwells,-= and means for moving said mechanism to wet said article during each dwell.

11. In a coating machine, the combination with a conveyor for articles to be wetted, means for rotating said conveyor in a plurality of angular movements alternatin with dwells, a plurality of-clamps on sai conveyor angularly spaced apart on a parity with the extent of each angular movement, means for delivering an article to a clamp during each dwell, means for wetting an article during each dwell and means for removing an article from a clamp during each dwell. n I

12. In a coating machine, the combination with-a conveyor for articles to be wetted,

'means for rotating said conveyor in a plurahty of angular movements alternating with dwells, a plurality of clamps on said conveyor angularly spaced apart on a parity with the extent of each angular movement, means for opening a clamp during each dwell, means for delivering an article thereto, means for closing said clamp, means for wetting said article during a succeeding dwell, means for opening said clamp during a succeeding dwell and means for removing said article from said clamp during said last-named dwell.

ted by said mechanism and into position to be removed from said clamp.

14. In a coating machine, the combination with a conveyor, of a clamp on said convoyor, means for opening said clamp, a suction head, means for moving said head against an article, means for creating a partial vacuum in said head to cause said article to move therewith, means for moving said head to place said article within said clamp,

means for closing said clamp upon; said,-

article, means for changing said vacuum to plenum, a wetting mechanism, a depositor, means for moving said article into position to bewetted by said mechanism and into position to be grasped by said depositor, means for opening said clamp and means for moving said depositor to remove said article from said clamp.

15. In a coating machine, the combination with a conveyor, of a clamp on said conveyor, means for opening said clamp, a suction head, means for moving said head against an article, means for creating a partial vacuum in said head to cause said article to move therewith, means for moving said head to place said article within said clamp,

means for closing said clamp upon said article, means for changing said vacuum to plenum, a wetting mechanism,a depositor, means for moving said article into position to be wetted by said mechanism and into position to be grasped by said depositor, means for opening said clamp, a nostril, means for moving saiddepositor to remove said article from said clamp and place it in alignment with said nostril, means for moving said nostril into contact with said article, means for producing a partial vacuum in said nostril, means for releasing said article from said depositor, means for moving said nostril into position to deliver said article, and means for changing said last-named vacuum to plenum.

16. In a coating machine, the combination with a plurality of clamps for clamping the articles to be wetted, mechanism for dehvering articles to said clamps seriatim, means for wetting said articles, and a depositor comprising clamping members, of timed mechanism for opening and closing said clamps and members to deliver said articles from said clamps to said members seriatim and mechanism for removing said article from said members.

17. In a coating machinegthe combination f l a I with a molstened material and means for moving said material in a closed locus hav-v ing a plurality of sides, of means for moving the article to be wetted into position to contact with said material during its movement along one of said sides.

18. In a coating machine, the combination with means for holding. an article to be coated, means for coating said article, means for removing said article from said holding means and means for varying the time interval between the coating of said article and the removal of said article from said holding means.

In testimony whereof, I afiix my signature.

REINHOLD n. scnotuwrrrra, 

